Great write up really helpful, just one question are there any negatives to the 2" header system, other than higher price?

That was my only negative. Some people are having fitment issues since it is bigger. I did not but it is a little bit of a squeeze. If you do have issues loosen up the motor mounts and slide the motor a quarter inch or so to the side to make room. If I were to do it again made stepped headers would be the way I'd go but I'm happy with my 2"ers